Sewing-machine.



No. 761,558. PATENTED MAY 31, 1904.

- .E.'J. TOOP.

-i SEWING MACHINE;

APPLIUATI ON FILED JUNE 26', 1889.

N0 MODEL.

2 SHEETS-SHEET 1.

' A xn fa I I 3513 filttov3$i%% wi/twaooeo YHE NORRIS PETE" co..mro-u'mq. wAmlucrou. 0' c.

' No. 761,558. I PATBNTED MAY 31, 1904.'

. 5. TOOF. SEWING MACHINE;

APPLIOAT ION FILED JUNE 26, 1889.-

No MODEL.

2 SHEETS-SHEET 2.

$51 mf m UNITE STATES- ]?atented May 31, 1904. v

PATENT, OFFICE.

EDWIN J. TOOF, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE EDWIN J. TOOFCOMPANY, OF NEW HAVEN, CONNECTICUT, A COR- PORAIION on NEW JERSEY.

SEWING-MACHINE,

\ SPECIFICATION forming part of Letters Patent No. 761,558, dated May1904.

' A nmnn filed June 26, 1889. Serial No. 315,667. (Nomodeh) V Tb allwhom it may concern/.

Be it known that I, EDWIN J. TOOF, a citizen of the United States, and aresident of thecity of New Haven, county of New Haven, and State 5 ofConnecticut, have invented new and useful Improvements inSewing-Machines, of which the following is a specification.

My invention has for its object to provide a sewing-machinethat may beused for makj 1 ing either a lock-stitch or a chain-stitch. In carryingthe invention into effect I provide a lock-stitch sewing-machine'ofordinary construction with a chain-stitch device which will beinoperative during the operation of the machine in making lock-stitches,but which may be rendered operative to adapt the .machinevfor makingchain-stitches whenever -1t 1s so deslred, such change in the operationof the machine for the formation of the different stitches beingeffected withoutthe addition or substitution of any parts.

Referring to the accompanying drawings, 1 [forming part of thlsspeclfication, Figure l is a front endele'vati'on, partly broken away,of 5 a sewing-machine embodying my invention.

Fig. 2 is an under side View of the same, on a Figs. 3, 4:, 5, and .6are detail views illustrating the operation of my inven} tion, and Figs.7, 8, and 9 are detail viewsto';

reduced scale.

3 be hereinafter referred to.

loop-taker or. shuttle C, actuated from said i 4 driving-shaft, and thevertically-reciprocat ing needle a.

. The chain-stitch device embodying my invention, as herein shown,comprises a loop-1 with the needle and the loop-taker in the for;

mation of a chain-stitch in a manner asfolthe said needle descends, andas it rises it lows: The machine being set in motion to re-] ciprocatethe needle and rotate the loop-taker, 5

throws out a loop of thread a which is seized by the beak 0 of theloop-taker, asshown in Fig. 3, and as said loop-taker continuesitsrotation and the needle continues to rise the said loop is carriedaround the bodyof, the

loop-taker. in the usual manner, as indicated in Fig. 4, until saidloop-taker reaches the position shown in Fig. 5, when the loop,.havingbeen partially drawn up by the take-up, will be engaged by theloop-holder E and held thereby in an open or distended condition acrossthe path of movement of the needle, the said loop-holder having beenmoved. forward to such loop engaging andholding position dur- 5 ing thedescribed rotation of the loop-taker. Y At this time in the operation ofthe partsthe needle will descend into the space between the two prongsat the forked end of the loopholder and carry its thread through thedistended loop held thereby, as shown in Fig. 6. As the parts nowcontinue their operation I the loop-taker will be moved back from itsholding position, so as to cast off the loop held thereby, as shown inFig. 3, and the second loop thrown out by the needle will be seized by.the loop-taker beak and drawn through j, the first loop, which latter issubsequently Similar reference characters designate like parts intheseveral figures of the drawings. My invention is herein shown asapplied to:

a Standard? lock-stitch sewing-machine of 35 usual construction andoperation, the same; embodying the work-plate A, the rotary driv-,ing-shaft B, mounted in suitable bearings at; the under side of saidwork-plate, the rotary provide for such positioning of the loop, the

loop-holder E is providcdwith a transverselyarrang'ed notch c atjitsunder side and in a 90.

position forward of the rear end of the space or slot between the prongsof the loop-holder into which the thread-loop is received and properlypositioned, as most clearly shown in Fig. 9. The loop-holder maybeactuatedto have a forward-and-backward or reciprocating movement tocooperate with the needle and the loop-taker in the formation of achainstitch in the manner described by any suitable means, the meansprovided for such purpose, as herein shown, comprising a lever D,pivoted at one end to the under side of the work-plate at cl and at itsopposite end having the said loop-holder E attached thereto and a cam Fon the shaft B, against which the said lever is operatively held byasuitable spring, such as G. With these parts rotation of the cam F willvibrate the lever D, which in turn will impart the desired reciprocatingmovement to the loop-holder, as before described.

When it isdesired to employ the machine for lock stitch sewing, theloop-holder E should be held in a stationary or inoperative position,and as a simple and effective means for doing this a locking-lever H ispivoted to the under side of the work-plate at it and provided with aprojection it thereon for cooperating with a cam-surface d at the freeend of the lever D to draw the latter away from operative engagementwith the cam F, as indicated by dotted lines in Fig. 2, and hold thesame in such position until it is again desired to employ the machinefor chain-stitch sewing, when it will only be necessary to swing thelocking-lever H back from its position of holding engagement with thelever D, whereupon the latter will be automatically returned to itsoperative position under the action of the spring G.

When the machine is used for lock-stitch sewing, the loop-taker willcontain the usual bobbin carrying the underthread-supply; but

when the machine is used for chain-stitch sewing, the saidunderthread-supply is unnecessary, and therefore the bobbin containingthe same will preferably be removed from the loop-taker, the bobbin-caseI, however, being employed, so as to present a smooth surface at theface side of the loop-taker for the free and unobstructed passage of thefront side of the thread-loop thereover. Aside from this insertion andremoval of the bobbin into and from the loop-taker the only changenecessary to adapt the machine for either chain-stitch sewing orlock-stitch sewing is the mere shifting of the loop-holder to andfromits operative position, as described.

What I claim is 1. In a sewing-machine, the combination with the needleand a loop-taker, of a loopholder operative for receiving theneedlethread loop after it has been released by the loop-taker andholding the same in an open or distended condition across the path ofthe needle and thereafter releasing the loop subsequent to the passagethereinto of the needle, the said loop-holder being provided with aforked or slotted end for the passage of the needle into the loop heldthereby, and means for actuating the loop-holder.

2. In a sewing-machine, the combination with the needle and aloop-taker, of a loopholder independent of the loop-taker and operativefor receiving the needle-thread loop after it has been released by theloop-taker and holding the same in an'open or distended condition acrossthe path of the needle and thereafter releasing the loop subsequent tothe passage thereinto of the needle, the said loop-holder being providedwith a forked or slotted end for the passage of the needle into the loopheld thereby, and means for actuating the loop-holder.

3. In a sewing-machine, the combination, with the needle and aloop-taker, of a reciprocating loop-holder for receiving theneedlethread loop after it has been released by the loop-taker andholding the same in an open or distended condition across the path ofthe needle, said loop-holder being provided with a forked or slotted endfor the passage of the needle into the loop held thereby, and means foractuating the loop-holder.

I. In a sewing-machine, the combination, with the needle and aloop-taker, of a reciprocating loop-holder for receiving theneedlethreadloop after it has been released by the loop-taker and holding the samein an open or distended condition across the path of the needle, saidloop-holder being provided with loop-positioning means and with a forkedor slotted end for the passage of the needle into the loop held thereby,and means for actuating the loop-holder.

5. In a sewing-machine, the combination, with the needle and aloop-taker, of a reciprocating loop-holder for receiving theneedlethread loop after it has been released by the loop-taker andholding the same in an open or distended condition across the path ofthe needle, said loop-holder being provided with loop-positioning meansat its under side and with a forked or slotted end for the passage ofthe needle into the loop held thereby, and means for actuating theloop-holder.

6. In a sewing-machine, the combination, with the needle and aloop-taker, of a reciprocating loop-holder for receiving theneedlethread loop after it has been released by the loop-taker andholding the same in an open or distended condition across the path ofthe needle, said loop-holder being provided with a loop-positioningnotch and with a forked. or slotted end for the passage of the needleinto the loop held thereby, and means for actuating the loop-holder.

7 In a sewing-machine, the combination, with the needle and aloop-taker, of a reciprocating loop-holder for receiving theneedlethread loop after it has been released by the loop-taker andholding the same in an open or distended condition across the path ofthe needle, said loop-taker being provided with a forked or slotted endfor the passage of the needle into the loop held thereby; and means,including a vibrating lever, for actuating said loop-holder.

8. In a sewing-machine, thecombination,

a forked or slotted end for the passage of the' needle into-the loopheld thereby, and means including a cam and a lever for actuating saidloop-holder.

9. In a sewing-machine, the combination,

with the needle and a loop-taker, of a reciprocating loop-holder forreceiving the needlethread loop after it has been released by theloop-taker and holding the same in an open or distended condition acrossthe path of the needle, said loop-holder being provided with a forked orslotted end for the passage of the needle into the loop held thereby,means for actuating theloop-holder, and means for holding theloop-holder in a stationary or inoperative position, for the purpose setforth.

' EDWIN J. TOOF. Witnesses:

JOSEPH M. CRANE, v CHAs. F. DANE.

